Card selection. OBZhD

BASICS OF SAFE LIFE
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Card selection. Basics of safe life

Fundamentals of Safe Life Activities (OBZhD)

For selection of the necessary map sheets prefabricated tables serve - schematic maps of a small scale, which show the layout and nomenclature of maps.

Card selection
Rice. 6.6. Layout and nomenclature of sheets of maps at a scale of 1:100

If the nomenclature of one or more sheets is known and it is required to determine the nomenclature of a number of adjacent sheets, then they take the layout scheme for maps of the appropriate scale, mark these sheets on it and write out the nomenclature of adjacent sheets.

If you have to determine the nomenclature of map sheets for a new area, then you need to determine the geographical coordinates of an object located in the desired area using any geographical map, find its position on the map sheet layout scheme at a scale of 1: 1 and write out the nomenclature of this sheet . Then, according to the layout scheme of map sheets of the appropriate scale, taking into account the latitude and longitude of the corners of the map sheet at a scale of 000: 000, the position of the object is found by its geographical coordinates and the nomenclatures of the required sheets are written out.

The nomenclature of sheets adjacent to the existing sheet of the map can be recognized by the signatures on the frame on the corresponding side (Fig. 6.7).

Card selection
Rice. 6.7. Signatures on the sides of the frame of the nomenclatures of adjacent sheets of the map

Author: Mikhailov L.A.

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